SE9802259L - Method and apparatus for determining leaks in a fluid flow system - Google Patents

Method and apparatus for determining leaks in a fluid flow system

Info

Publication number
SE9802259L
SE9802259L SE9802259A SE9802259A SE9802259L SE 9802259 L SE9802259 L SE 9802259L SE 9802259 A SE9802259 A SE 9802259A SE 9802259 A SE9802259 A SE 9802259A SE 9802259 L SE9802259 L SE 9802259L
Authority
SE
Sweden
Prior art keywords
fluid
fluid flow
flow system
flowing
flowing fluid
Prior art date
Application number
SE9802259A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE513838C2 (en
SE9802259D0 (en
Inventor
Olle Esser
Original Assignee
Gambro Med Tech Ab
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gambro Med Tech Ab filed Critical Gambro Med Tech Ab
Priority to SE9802259A priority Critical patent/SE513838C2/en
Publication of SE9802259D0 publication Critical patent/SE9802259D0/en
Priority to ES99957197T priority patent/ES2258344T3/en
Priority to US09/720,050 priority patent/US6530262B1/en
Priority to DE69930145T priority patent/DE69930145T2/en
Priority to PCT/SE1999/000730 priority patent/WO1999067615A1/en
Priority to JP2000556223A priority patent/JP4221156B2/en
Priority to EP99957197A priority patent/EP1088210B1/en
Priority to AT99957197T priority patent/ATE319074T1/en
Publication of SE9802259L publication Critical patent/SE9802259L/en
Publication of SE513838C2 publication Critical patent/SE513838C2/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
    • G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
    • G01M3/2807—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes
    • G01M3/2815—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes using pressure measurements
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/14—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis
    • A61M1/16—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis with membranes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/14—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis
    • A61M1/16—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis with membranes
    • A61M1/1601—Control or regulation
    • A61M1/1603—Regulation parameters
    • A61M1/1605—Physical characteristics of the dialysate fluid
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/14—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis
    • A61M1/16—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis with membranes
    • A61M1/1621—Constructional aspects thereof
    • A61M1/1647—Constructional aspects thereof with flow rate measurement of the dialysis fluid, upstream and downstream of the dialyser
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/14—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis
    • A61M1/16—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis with membranes
    • A61M1/1621—Constructional aspects thereof
    • A61M1/165—Constructional aspects thereof with a dialyser bypass on the dialysis fluid line
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/34—Filtering material out of the blood by passing it through a membrane, i.e. hemofiltration or diafiltration
    • A61M1/3403—Regulation parameters
    • A61M1/341—Regulation parameters by measuring the filtrate rate or volume
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/33—Controlling, regulating or measuring
    • A61M2205/3331—Pressure; Flow
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/33—Controlling, regulating or measuring
    • A61M2205/3331—Pressure; Flow
    • A61M2205/3334—Measuring or controlling the flow rate
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/70—General characteristics of the apparatus with testing or calibration facilities
    • A61M2205/702—General characteristics of the apparatus with testing or calibration facilities automatically during use
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/70—General characteristics of the apparatus with testing or calibration facilities
    • A61M2205/705—Testing of filters for leaks

Landscapes

  • Health & Medical Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Urology & Nephrology (AREA)
  • Hematology (AREA)
  • Animal Behavior & Ethology (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Veterinary Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Vascular Medicine (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Emergency Medicine (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • External Artificial Organs (AREA)
  • Examining Or Testing Airtightness (AREA)

Abstract

A method and apparatus are disclosed for calibrating a sensor for flowing fluid in a system including a dialysis monitor, a fluid inlet and a fluid outlet, the method including applying a first pressure to the flowing fluid and detecting a first flow of the flowing fluid at the fluid input and the fluid output, applying a second pressure to the flowing fluid and detecting a second flow of the flowing fluid at the fluid input and the fluid output, and determining whether any detected differences between the first and second flows are the result of leakage in the system or are caused by the sensor.
SE9802259A 1998-06-25 1998-06-25 Method and apparatus for calibrating sensing means in a system with a flowing fluid SE513838C2 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
SE9802259A SE513838C2 (en) 1998-06-25 1998-06-25 Method and apparatus for calibrating sensing means in a system with a flowing fluid
ES99957197T ES2258344T3 (en) 1998-06-25 1999-05-03 PROCEDURE AND DEVICE FOR DETERMINING THE EXISTENCE OF LEAKS IN A SYSTEM BY WHICH A FLUID CIRCULATES.
US09/720,050 US6530262B1 (en) 1998-06-25 1999-05-03 Method and device for determining the existence of leaks in a system with flowing fluid
DE69930145T DE69930145T2 (en) 1998-06-25 1999-05-03 Method and apparatus for determining the presence of leaks in a system of flowing fluid
PCT/SE1999/000730 WO1999067615A1 (en) 1998-06-25 1999-05-03 Method and device for determining the existence of leaks in a system with flowing fluid
JP2000556223A JP4221156B2 (en) 1998-06-25 1999-05-03 Method and apparatus for detecting the presence of a leak in a system in which fluid is flowing
EP99957197A EP1088210B1 (en) 1998-06-25 1999-05-03 Method and device for determining the existence of leaks in a system with flowing fluid
AT99957197T ATE319074T1 (en) 1998-06-25 1999-05-03 METHOD AND DEVICE FOR DETECTING LEAKS IN A SYSTEM WITH FLOWING FLUID

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9802259A SE513838C2 (en) 1998-06-25 1998-06-25 Method and apparatus for calibrating sensing means in a system with a flowing fluid

Publications (3)

Publication Number Publication Date
SE9802259D0 SE9802259D0 (en) 1998-06-25
SE9802259L true SE9802259L (en) 2000-02-09
SE513838C2 SE513838C2 (en) 2000-11-13

Family

ID=20411835

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9802259A SE513838C2 (en) 1998-06-25 1998-06-25 Method and apparatus for calibrating sensing means in a system with a flowing fluid

Country Status (8)

Country Link
US (1) US6530262B1 (en)
EP (1) EP1088210B1 (en)
JP (1) JP4221156B2 (en)
AT (1) ATE319074T1 (en)
DE (1) DE69930145T2 (en)
ES (1) ES2258344T3 (en)
SE (1) SE513838C2 (en)
WO (1) WO1999067615A1 (en)

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US6572576B2 (en) * 2001-07-07 2003-06-03 Nxstage Medical, Inc. Method and apparatus for leak detection in a fluid line
US9717840B2 (en) 2002-01-04 2017-08-01 Nxstage Medical, Inc. Method and apparatus for machine error detection by combining multiple sensor inputs
US7040142B2 (en) * 2002-01-04 2006-05-09 Nxstage Medical, Inc. Method and apparatus for leak detection in blood circuits combining external fluid detection and air infiltration detection
US20030128125A1 (en) 2002-01-04 2003-07-10 Burbank Jeffrey H. Method and apparatus for machine error detection by combining multiple sensor inputs
DE10201109C1 (en) * 2002-01-15 2003-01-23 Fresenius Medical Care De Gmbh Detecting leak in liquid system of blood treatment system involves deriving leakage rate from change in pressure in defined intervals, driving leakage volume from leakage rate
US20070004996A1 (en) * 2005-06-20 2007-01-04 Lovejoy David A Needle disengagement sensing mechanism
WO2007000189A1 (en) * 2005-06-29 2007-01-04 Agilent Technologies, Inc. Leakage detection based on fluid property changes
JP4795775B2 (en) * 2005-10-31 2011-10-19 トキコテクノ株式会社 Underground tank leak inspection method
US7909795B2 (en) * 2007-07-05 2011-03-22 Baxter International Inc. Dialysis system having disposable cassette and interface therefore
US8715235B2 (en) * 2007-07-05 2014-05-06 Baxter International Inc. Dialysis system having disposable cassette and heated cassette interface
CN101614575B (en) * 2008-06-26 2012-05-23 北京谊安医疗系统股份有限公司 Method for correcting relation of voltage and airflow speed of mass flow sensor
US8685251B2 (en) * 2009-12-05 2014-04-01 Home Dialysis Plus, Ltd. Ultra-pasteurization for dialysis machines
WO2011069110A1 (en) * 2009-12-05 2011-06-09 Home Dialysis Plus, Ltd. Modular dialysis system
US8753515B2 (en) * 2009-12-05 2014-06-17 Home Dialysis Plus, Ltd. Dialysis system with ultrafiltration control
ES2403598T5 (en) † 2009-12-22 2016-12-13 Gambro Lundia Ab Method and apparatus for controlling a fluid flow rate in a fluid transport conduit of a medical device
DE102009060668A1 (en) * 2009-12-28 2011-06-30 Fresenius Medical Care Deutschland GmbH, 61352 Apparatus and method for monitoring extracorporeal blood treatment
US8501009B2 (en) 2010-06-07 2013-08-06 State Of Oregon Acting By And Through The State Board Of Higher Education On Behalf Of Oregon State University Fluid purification system
WO2012017959A1 (en) * 2010-08-05 2012-02-09 日機装株式会社 Blood purifying device, and method for inspecting for liquid leakage therein
DE102010035498B4 (en) * 2010-08-25 2012-08-02 Fresenius Medical Care Deutschland Gmbh Method for detecting leaks, system and medical treatment device
CN103957960B (en) 2011-10-07 2016-04-13 霍姆透析普拉斯有限公司 Heat-exchange fluid for dialysis system purifies
GB2500998B (en) * 2012-03-19 2019-01-16 Ulc Robotics Inc System and Method for Automated Integrity Testing
DE102013001587A1 (en) 2013-01-30 2014-07-31 Fresenius Medical Care Deutschland Gmbh Device and method for controlling a treatment device
US9506785B2 (en) 2013-03-15 2016-11-29 Rain Bird Corporation Remote flow rate measuring
EP3838308A1 (en) 2014-04-29 2021-06-23 Outset Medical, Inc. Dialysis system and methods
WO2018013857A1 (en) 2016-07-13 2018-01-18 Rain Bird Corporation Flow sensor
EP3500317B1 (en) 2016-08-19 2022-02-23 Outset Medical, Inc. Peritoneal dialysis system and methods
US10473494B2 (en) 2017-10-24 2019-11-12 Rain Bird Corporation Flow sensor
US11662242B2 (en) 2018-12-31 2023-05-30 Rain Bird Corporation Flow sensor gauge

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JPS516083A (en) * 1974-07-03 1976-01-19 Nippon Kokan Kk Ryutaino morekenchisochi
JPS6027372B2 (en) * 1979-06-11 1985-06-28 工業技術院長 Pipeline leak location estimation device
EP0094533B1 (en) * 1982-05-15 1986-03-12 Fried. Krupp Gesellschaft mit beschränkter Haftung Method for leakage testing of pipes or networks of pipes
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Also Published As

Publication number Publication date
SE513838C2 (en) 2000-11-13
JP2002519630A (en) 2002-07-02
EP1088210B1 (en) 2006-03-01
WO1999067615A1 (en) 1999-12-29
DE69930145D1 (en) 2006-04-27
EP1088210A1 (en) 2001-04-04
ES2258344T3 (en) 2006-08-16
DE69930145T2 (en) 2006-08-17
ATE319074T1 (en) 2006-03-15
US6530262B1 (en) 2003-03-11
JP4221156B2 (en) 2009-02-12
SE9802259D0 (en) 1998-06-25

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